Method and apparatus for determining ra-rnti

ABSTRACT

Disclosed are a method and apparatus for determining an RA-RNTI. In the present application, a base station receives a random access preamble sent by a terminal; the base station determines an RA-RNTI according to a time-frequency resource occupied by the random access preamble, and the time-frequency resource is a time-frequency resource of an orthogonal frequency division multiplexing (OFDM) symbol level; and the base station sends a random access response message, and the random access response message includes downlink control information allocated, by the base station, for the terminal, and the downlink control information is scrambled using the RA-RNTI. By means of the present application, an RA-RNTI can be determined during a random access process of an NR system.

The present application is a continuation of U.S. patent applicationSer. No. 17/497,987, filed on Oct. 11, 2021. The U.S. patent applicationSer. No. 17/497,987 is a continuation of U.S. patent application Ser.No. 16/646,559, filed Jun. 28, 2018, which claims priority to ChinesePatent Application No. 201710812754.0, filed with the China NationalIntellectual Property Administration on Sep. 11, 2017 and entitled“Method and Apparatus for Determining RA-RNTI”. The disclosure of theabove application is incorporated herein by reference.

FIELD

The present application relates to the field of wireless communicationtechnologies, and particularly to a method and apparatus for determininga Random Access-Radio Network Temporary Identifier (RA-RNTI) in therandom access process.

BACKGROUND

The random access process refers to a process from a terminaltransmitting a random access preamble to attempt to access a wirelessnetwork to the terminal establishing a basic signaling connection withthe network. In the random access process, after transmitting the randomaccess preamble, the terminal monitors a Random Access Response (RAR,also called Msg2) message scheduled by the base station through aPhysical Downlink Control Channel (PDCCH). The base station transmitsthe uplink resources allocated to the terminal to the terminal throughthe Downlink Control Information (DCI) in the RAR message. The CyclicRedundancy Check (CRC) of the DCI is scrambled by the RA-RNTI. Theterminal uses the RA-RNTI to descramble the received DCI to obtain theuplink resources allocated by the base station.

In the Long Term Evolution (LTE) of 4G system, the RA-RNTI is a functionrelated to time and frequency. For the non-BL/CE (Bandwidth-reducedLow-complexity/Coverage-Enhancement) terminal, the RA-RNTI is given bythe formula of:

RA-RNTI=1+t_id+10*f_id   [1]

-   -   and t_id is the index of the first subframe of the Physical        Random Access CHannel (PRACH) in the time domain, and f_id is        the index of the frequency domain bandwidth occupied by the        PRACH.

In the 5G new wireless communication (NR) system, there are two types ofrandom access preamble formats: long sequence (L=839) and short sequence(L=139 or 127), and the preamble format of the short sequence is asshown in Table 1.

TABLE 1 Preamble format of NR short sequence (subcarrier spacing =15/30/60/120 KHz) Number of OFDM symbols contained in each Path Pathrandom delay delay Largest access T T (Path (Path cell Preamble preambleC TS G profile) profile) radius format sequence P EQ P (Ts) (us) (meter)Case A 0 1 144 2048 0 48 1.56 469 TA is known or small cell 1 2 288 40960 96 3.13 938 Small cell 2 4 576 8192 0 144 4.69 2,109 Normal cell 3 6864 12288 0 144 4.69 3,516 Normal cell B 1 2 216 4096 72 96 3.13 469Small cell 2 4 360 8192 216 144 4.69 1,055 Normal cell 3 6 504 12288 360144 4.69 1,758 Normal cell 4 12 936 24576 792 144 4.69 3,867 Normal cellC 0 1 1240 2048 0 144 4.69 5300 Normal cell 2 4 2048 8192 2916 144 4.699200 Normal cell (1160 when subcarrier spacing is 120 KHz)

In Table 1, for the subcarrier spacing=15 KHz, Ts=1/30720 ms; for SCS=30KHz, Ts=1/(2*30720) ms; for SCS=60 KHz, Ts=1/(4*30720) ms; for SCS=120KHz, Ts=1/(8*30720) ms.

In the NR system, for the preamble format of the short sequence, since aslot may contain multiple PRACH preamble sequences and the number ofslots contained in a 10 ms radio frame varies for different subcarrierspacings, it is impossible to calculate the RA-RNTI using the existingformula of the LTE.

Therefore, it is urgent to define the method of calculating the RA-RNTIfor the random access process of the NR system.

SUMMARY

An embodiment of the present application provide a method and apparatusfor determining the RA-RNTI.

In one embodiment, a method for determining an RA-RNTI is provided,including:

-   -   receiving, by a base station, a random access preamble        transmitted by a terminal;    -   determining, by the base station, an RA-RNTI according to        time-frequency resources occupied by the random access preamble,        and the time-frequency resources are time-frequency resources in        OFDM symbol level;    -   transmitting, by the base station, a random access response        message, and the random access response message includes        downlink control information allocated by the base station for        the terminal, and the downlink control information is scrambled        by using the RA-RNTI.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble; andthe time domain resource related parameters include: an index of a firstOFDM symbol occupied by the random access preamble in its slot, and anindex of a slot occupied by the random access preamble in its radioframe; the frequency domain resource related parameters include: anindex of a frequency domain bandwidth occupied by a PRACH correctedbased on a coefficient; the coefficient is determined according to thenumber of slots in a subframe and the number of OFDM symbols in a slot,and the PRACH is used to transmit the random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   start_symbol_index_in_slot is the index of the first OFDM symbol        occupied by the random access preamble in its slot;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble; andthe time domain resource related parameters include: the index of therandom access preamble sequence in the slot occupied by the randomaccess preamble, the number of OFDM symbols contained in the randomaccess preamble sequence, and the index of the slot occupied by therandom access preamble in its radio frame, and the index of the firstOFDM symbol occupied by the random access preamble in its slotcorresponds to the slot occupied by the random access preamble, and thenumber of OFDM symbols contained in the random access preamble sequencecorresponds to the format of the random access preamble sequence; thefrequency domain resource related parameters include: the index of thefrequency domain bandwidth occupied by a PRACH corrected based on acoefficient; the coefficient is determined according to the number ofslots in a subframe and the number of OFDM symbols in a slot, and thePRACH is used to transmit the random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_OS is the number of OFDM symbols contained in a random access        preamble sequence; and the N_OS is pre-configured or pre-agreed,        and different random access preamble sequences correspond to        different N_OSs;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble; andthe time domain resource related parameters include: the index of therandom access preamble sequence in the slot occupied by the randomaccess preamble, the total number of random access preamble sequences inthe slot occupied by the random access preamble, and the index of theslot occupied by the random access preamble in its radio frame, and theindex of the first OFDM symbol occupied by the random access preamble inits slot corresponds to the slot occupied by the random access preamble,and the total number of random access preamble sequences in the slotoccupied by the random access preamble corresponds to the slot index;the frequency domain resource related parameters include: the index ofthe frequency domain bandwidth occupied by a PRACH corrected based on acoefficient; the coefficient is determined according to the number ofslots in a subframe and the number of OFDM symbols in a slot, and thePRACH is used to transmit the random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_sequence_per_slot is the total number of random access        preamble sequences in the slot occupied by the random access        preamble; and N_sequence_per_slot corresponds to the slot, and        the total number of random access preamble sequences in a slot        is pre-configured or pre-agreed;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, a method for determining an RA-RNTI is provided,including:

-   -   transmitting, by a terminal, a random access preamble sequence        to a base station;    -   determining, by the terminal, an RA-RNTI according to        time-frequency resources occupied by the random access preamble        sequence, and the time-frequency resources are time-frequency        resources in OFDM symbol level;    -   receiving, by the terminal, a random access response message        transmitted by the base station, and descrambling downlink        control information contained in the random access response        message by using the RA-RNTI.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble; andthe time domain resource related parameters include: an index of a firstOFDM symbol occupied by the random access preamble in its slot, and anindex of a slot occupied by the random access preamble in its radioframe; the frequency domain resource related parameters include: anindex of a frequency domain bandwidth occupied by a PRACH correctedbased on a coefficient; the coefficient is determined according to thenumber of slots in a subframe and the number of OFDM symbols in a slot,and the PRACH is used to transmit the random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   start_symbol_index_in_slot is the index of the first OFDM symbol        occupied by the random access preamble in its slot;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the number of OFDM        symbols contained in the random access preamble sequence, and        the index of the slot occupied by the random access preamble in        its radio frame, and the index of the first OFDM symbol occupied        by the random access preamble in its slot corresponds to the        slot occupied by the random access preamble, and the number of        OFDM symbols contained in the random access preamble sequence        corresponds to the format of the random access preamble        sequence;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_OS is the number of OFDM symbols contained in a random access        preamble sequence; and the N_OS is pre-configured or pre-agreed,        and different random access preamble sequences correspond to        different N_OSs;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble; andthe time domain resource related parameters include: the index of therandom access preamble sequence in the slot occupied by the randomaccess preamble, the total number of random access preamble sequences inthe slot occupied by the random access preamble, and the index of theslot occupied by the random access preamble in its radio frame, and theindex of the first OFDM symbol occupied by the random access preamble inits slot corresponds to the slot occupied by the random access preamble,and the total number of random access preamble sequences in the slotoccupied by the random access preamble corresponds to the slot index;the frequency domain resource related parameters include: the index ofthe frequency domain bandwidth occupied by a PRACH corrected based on acoefficient; the coefficient is determined according to the number ofslots in a subframe and the number of OFDM symbols in a slot, and thePRACH is used to transmit the random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_sequence_per_slot is the total number of random access        preamble sequences in the slot occupied by the random access        preamble; and N_sequence_per_slot corresponds to the slot, and        the total number of random access preamble sequences in a slot        is pre-configured or pre-agreed;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, a base station is provided, including:

-   -   a receiving device configured to receive a random access        preamble transmitted by a terminal;    -   a determining device configured to determine an RA-RNTI        according to time-frequency resources occupied by the random        access preamble, and the time-frequency resources are        time-frequency resources in OFDM symbol level;    -   a transmitting device configured to transmit a random access        response message, and the random access response message        includes downlink control information allocated by the base        station for the terminal, and the downlink control information        is scrambled by using the RA-RNTI.

In one embodiment, a terminal is provided, including:

-   -   a transmitting device configured to transmit a random access        preamble sequence to a base station;    -   a determining device configured to determine an RA-RNTI        according to time-frequency resources occupied by the random        access preamble sequence, and the time-frequency resources are        time-frequency resources in OFDM symbol level;    -   a receiving device configured to receive a random access        response message transmitted by the base station, and descramble        downlink control information contained in the random access        response message by using the RA-RNTI.

In one embodiment, a communication device is provided, including: aprocessor, a memory, a transceiver and a bus interface; the processor isconfigured to read the programs in the memory and perform the processof:

-   -   receiving a random access preamble transmitted by a terminal via        the transceiver;    -   determining an RA-RNTI according to time-frequency resources        occupied by the random access preamble, and the time-frequency        resources are time-frequency resources in OFDM symbol level;    -   transmitting a random access response message via the        transceiver, and the random access response message includes        downlink control information allocated by the base station for        the terminal, and the downlink control information is scrambled        by using the RA-RNTI.

In one embodiment, a communication device is provided, including: aprocessor, a memory, a transceiver and a bus interface; the processor isconfigured to read the programs in the memory and perform the processof:

-   -   transmitting a random access preamble sequence to a base station        via the transceiver;    -   determining an RA-RNTI according to time-frequency resources        occupied by the random access preamble sequence, and the        time-frequency resources are time-frequency resources in OFDM        symbol level;    -   receiving a random access response message transmitted by the        base station via the transceiver, and descrambling downlink        control information contained in the random access response        message by using the RA-RNTI.

In one embodiment, a computer storage medium is provided, where thecomputer readable storage medium stores the computer executableinstructions configured to cause the computer to perform any method inthe embodiments described above.

In one embodiment, a computer storage medium is provided, where thecomputer readable storage medium stores the computer executableinstructions configured to cause the computer to perform any method inthe embodiments described above.

In the above embodiments of the present application, the RA-RNTI may bedetermined according to the time-frequency resources occupied by therandom access preamble, and the time-frequency resources are thetime-frequency resources in OFDM symbol level. Since the RA-RNTI iscalculated based on the time-frequency resources in OFDM symbol leveloccupied by the random access preamble, for the NR system, the timeinterval of the random access preamble may be based on the OFDM symbollevel in many cases of the preamble format of the short sequence and thesubcarrier spacing, implementing the determination of the RA-RNTI in therandom access process of the NR system.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a network architecture applicable tothe embodiments of the present application.

FIG. 2 is a schematic diagram of a random access process in accordancewith an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a base station in accordancewith an embodiment of the present application.

FIG. 4 is a schematic structural diagram of a terminal in accordancewith an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a communication device inaccordance with an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a communication device inaccordance with another embodiment of the present application.

DETAILED DESCRIPTION

In the following, some terms in the embodiments of the presentapplication are explained to facilitate the understanding.

-   -   (1) In the embodiments of the present application, the nouns        “network” and “system” are often used alternately.    -   (2) The term “a plurality of” in the embodiments of the present        application refers to two or more, and other quantifiers are        similar thereto.    -   (3) “and/or” describes the association relationship of the        associated objects, and indicates that there may be three        relationships, for example, A and/or B may represent: only A,        both A and B, and only B. The character “/” generally indicates        that the associated objects have a kind of “or” relationship.

The embodiments of the present application will be described belowclearly and completely in combination with the figures in theembodiments of the present application.

FIG. 1 exemplarily shows a schematic diagram of a possible communicationscenario in accordance with an embodiment of the present application. Asshown in FIG. 1 , a terminal 110 accesses a wireless network through aRadio Access Network (RAN) node 120, to obtain the services of theexternal network (such as the Internet) through the wireless network orcommunicate with other terminals through the wireless network.

Here, the terminal is also called User Equipment (UE), Mobile Station(MS), Mobile Terminal (MT), etc., and is a device for providing thevoice and/or data connectivity to the user, e.g., a handheld device withthe wireless connection function, a vehicle-carried device, etc. Atpresent, some examples of the terminal are: mobile phone, tablet,laptop, palmtop computer, Mobile Internet Device (MID), wearable device,Virtual Reality (VR) device, Augmented Reality (AR) equipment, wirelessterminal in the industrial control, wireless terminal in the selfdriving, wireless terminal in the remote medical surgery, and wirelessterminal in the smart grid, wireless terminal in the transportationsafety, wireless terminal in the smart city, wireless terminal in thesmart home, etc.

The RAN is the part in the network that connects the terminal to thewireless network. The RAN node (or device) is a node (or device) in theradio access network, and may also be called a base station. At present,some examples of the RAN node are: gNB, Transmission Reception Point(TRP), evolved Node B (eNB), Radio Network Controller (RNC), Node B(NB), Base Station Controller (BSC), Base Transceiver Station (BTS),home base station (e.g., home evolved NodeB, or Home Node B (HNB)), BaseBand Unit (BBU), or Wireless fidelity (Wifi) Access Point (AP). Inaddition, in a network structure, the RAN may include a Centralized Unit(CU) node and Distributed Unit (DU) nodes. This structure splits theprotocol layer of the eNB in the Long Term Evolution (LTE) system, wheresome functions of the protocol layer are centrally controlled in the CU,and the remaining part or all of the functions of the protocol layer aredistributed in the DUs which are centrally controlled in the CU.

The network architecture described in the embodiments of the presentapplication is for the purpose of illustrating the embodiments of thepresent application more clearly, but not a limitation on theembodiments of the present application. With the evolution of thenetwork architecture, the embodiments of the present application arealso applicable to the similar problems.

For the NR system, due to the presence of the preamble format of theshort sequence and also the presence of many cases of subcarrierspacing, the time interval of the random access preamble is based on theOrthogonal Frequency Division Multiplexing (OFDM) symbol level.Therefore, the RA-RNTI cannot be calculated based on the time-frequencyresources in subframe level occupied by the random access preamble. Inorder to solve this problem, in the embodiments of the presentapplication, the RA-RNTI is calculated according to the time-frequencyresources at OFDM symbol level occupied by the random access preamble.

Further, in order to reduce the frequency domain resource overhead ofthe PRACH in the NR system, when the time domain and frequency domainresources related to the RA-RNTI are configured, the method configuringthe time domain resources and then the frequency domain resources isused, that is, only when all the time domain resources on the givenfrequency domain resource have been configured, the time domainresources on the next available frequency domain resource areconfigured.

The embodiments of the present application may be applicable to thecalculation of the RA-RNTI corresponding to the short-sequence randomaccess preamble in the NR system, and of course, it may also beapplicable to the calculation of the RA-RNTI corresponding to thelong-sequence random access preamble.

The embodiments of the present application provide the following threemethods for calculating the RA-RNTI.

First Method

In the first method, the time domain resource related parameters used tocalculate the RA-RNTI may include: the index of the first symboloccupied by the random access preamble in its slot, and the index of theslot occupied by the random access preamble in its radio frame; and thefrequency domain resource related parameters used to calculate theRA-RNTI may include the index of the frequency domain bandwidth occupiedby the PRACH corrected based on a coefficient, where the coefficient maybe determined according to the number of slots in a subframe and thenumber of symbols in a slot.

The following formula (2) exemplarily shows a method for calculating theRA-RNTI based on the first method:

RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id   [2].

And:

-   -   start_symbol_index_in_slot is the index of the first OFDM symbol        occupied by the random access preamble in its slot. For example,        there are at most 14 OFDM symbols in a slot and the index values        of the OFDM symbols are numbered sequentially from 0. The value        range of start_symbol_index_in_slot is [0,13]. At the base        station side, the base station may obtain the value of        start_symbol_index_in_slot by detecting the time-frequency        resource position of the random access preamble;    -   slot_id is the index of the slot occupied by the random access        preamble in its 10 ms radio frame. The indexes of slots in a 10        ms radio frame may be numbered sequentially from 1. At the base        station side, the base station may obtain the value of slot_id        by detecting the time-frequency resource position of the random        access preamble;    -   N_symbol_per_slot is the number of OFDM symbols in a slot. For        the case where the subcarrier spacing is 15 KHz, 30 KHz, 60 KHz        or 120 KHz, the value of N_symbol_per_slot is 14. The value of        N_symbol_per_slot is known to both the base station and the        terminal;    -   N_slot_per_subframe represents the number of slots in a 1 ms        subframe, and its value is related to the size of the subcarrier        spacing. For example, when the subcarrier spacing is 15 KHz, the        value of N_slot_per_subframe is 1; when the subcarrier spacing        is 30 KHz, the value of N_slot_per_subframe is 2; when the        subcarrier spacing is 60 KHz, the value of N_slot_per_subframe        is 4; when the subcarrier spacing is 120 KHz, the value of        N_slot_per_subframe is 8. The value of N_symbol_per_slot is        known to both the base station and the terminal;    -   f_id is the index of a frequency domain bandwidth occupied by a        PRACH. There is a mapping relationship between PRACHs and RACHs,        and the terminal transmits the random access preamble on the        RACH. The frequency domain bandwidth occupied by the PRACH may        be pre-agreed, and is known to both the base station and the        terminal.

Second Method

In the second method, the time domain resource related parameters usedto calculate the RA-RNTI may include: the index of the random accesspreamble sequence in the slot occupied by the random access preamble(this index corresponds to the slot occupied by the random accesspreamble), the number of OFDM symbols contained in the random accesspreamble sequence (the number of symbols corresponds to the format ofthe random access preamble sequence), and the index of the slot occupiedby the random access preamble in its radio frame; and the frequencydomain resource related parameters used to calculate the RA-RNTI mayinclude the index of the frequency domain bandwidth occupied by thePRACH corrected based on a coefficient, where the coefficient may beobtained according to the number of slots in a subframe and the numberof symbols in a slot.

The following formula (3) exemplarily shows a method for calculating theRA-RNTI based on the second method:

RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id  [3].

And:

-   -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble.        Here, the correspondence between the slots and the indexes of        the random access preambles is pre-configured or pre-agreed. At        the base station side, the base station may obtain the slot        (slot_id) occupied by the random access preamble and the        corresponding value of sequence_id_per_slot by detecting the        time-frequency resource position of the random access preamble.    -   N_OS is the number of OFDM symbols contained in a random access        preamble sequence, and its value range is 1, 2, 4, 6, and 12;        and the N_OS is pre-configured or pre-agreed. Its value is        related to the format of the random access preamble. For        different formats of the short-sequence random access preamble,        for example, the values of N_OS may be seen in Table 1. At the        base station side, the base station may determine the        corresponding random access preamble format according to the        detected time-frequency resources occupied by the random access        preamble (the correspondence between the time-frequency        resources of the random access preamble and the used format may        be pre-configured or pre-agreed), and then determine the        corresponding value of N_OS according to the random access        preamble format.

The meanings of slot_id, N_symbol_per_slot, N_slot_per_subframe, andf_id are the same as those in the first method.

Third Method

In the third method, the time domain resource related parameters used tocalculate the RA-RNTI may include: the index of the random accesspreamble sequence in the slot occupied by the random access preamble,the index of the slot occupied by the random access preamble in itsradio frame, and the number of OFDM symbols in a slot; and the frequencydomain resource related parameters used to calculate the RA-RNTI mayinclude the index of the frequency domain bandwidth occupied by thePRACH corrected based on a coefficient, where the coefficient may beobtained according to the number of slots in a subframe and the numberof symbols in a slot.

The following formula (4) exemplarily shows a method for calculating theRA-RNTI based on the third method:

RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id   [4].

In one embodiment. N_sequence_per_slot is the total number of randomaccess preamble sequences in the slot occupied by the random accesspreamble. Here, there is a correspondence between the index of the slot(slot_id) and N_sequence_per_slot, and the value of N_sequence_per_slotof a slot is pre-configured or pre-agreed. At the base station side, thebase station may obtain the index of the slot (slot_id) occupied by therandom access preamble by detecting the time-frequency resource positionof the random access preamble, and then determine the correspondingvalue of N_sequence_per_slot according to the slot_id.

The meanings of sequence_id_per_slot, slot_id, N_symbol_per_slot,N_slot_per_subframe, and f_id are the same as those in the first method.

Referring to FIG. 2 , it is a random access process according to anembodiment of the present application. As shown, the process may includethe following steps.

S201: a terminal transmits a random access preamble. The messagetransmitted in this step is also called Msg1. The Msg1 may betransmitted on a Random Access CHannel (RACH), and there is a mappingrelationship between RACHs and PRACHs.

S202: a base station receives the random access preamble transmitted bythe terminal, determines the RA-RNTI according to the time-frequencyresources in symbol level occupied by the random access preamble, andtransmits a random access response message, which is also called Msg2message. The random access response message includes the DownlinkControl Information (DCI) allocated by the base station for theterminal, and the CRC of the DCI is scrambled by using the RA-RNTI.

In one embodiment, the base station may calculate the RA-RATI by usingthe method described in the above embodiments.

In this step, the DCI may include the following information: the indexof the random access preamble received by the base station, the TimeAdjustment (TA) of the uplink transmission, scheduling information ofPhysical Uplink Shared CHannel (PUSCH), and the allocated Cell RadioNetwork Temporary Identifier (C-RNTI).

S203: the terminal receives the random access response messagetransmitted by the base station, and uses the determined RA-RNTI todescramble the downlink control information contained in the randomaccess response message. Here, the terminal may use the method providedin the above embodiments to determine the RA-RNTI according to thetime-frequency resources occupied by the random access preambletransmitted by the terminal.

Further, for the contention based random access process, S203 mayfurther include: the terminal transmits the uplink data according to thescheduling information and TA information carried in the random accessresponse. The message transmitted in this step is called Msg3 whichcontains the unique ID of the terminal, namely TMSI, and contains theRadio Resource Control (RRC) connection request generated by the RRClayer of the terminal.

Further, for the contention based random access process, after S203, theprocess may further include: S205, the base station returns a contentionresolution message (also called Msg4 message) to the terminal thataccesses successfully after receiving the Msg3 message from theterminal. The Msg4 message contains the unique ID (such as C-RNTI) ofthe terminal that accesses successfully and the RRC connectionestablishment response which is generated by the RRC layer of the basestation.

In order to understand the embodiments of the present application moreclearly, three methods of calculating the RA-RNTI according to theformulas (2), (3), and (4) in the embodiments of the present applicationwill be described below respectively in combination with three specificapplication scenarios and the process shown in FIG. 2 .

First Scenario

This scenario describes an example of calculating the RA-RNTI by usingthe first method described above. The configuration table of the numberof random access preambles as shown in Table 2 may be pre-configured atthe base station and the terminal.

TABLE 2 PRACH System Configuration Preamble Format frame slot_idstart_symbol_index_in_slot Index (A0/A1/A2/A3/B1/B2/B3/B4/C0/C2) number(1~10) (0~13) 0 0 Even 1 0 1 0 Even 4 1 2 0 Even 7 2 3 0 Any 1 3 4 0 Any4 4 5 0 Any 7 5 6 0 Any 1, 6 6 7 0 Any 2, 7 7 8 0 Any 3, 8 8 . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .

The above Table 2 defines the slot occupied by the random accesspreamble sequence and the first OFDM symbol occupied in the slot.

The subcarrier spacing is 15 KHz as an example in this scenario, and inthis case, N_slot_per_subframe=1, N_symbol_per_slot=14, and the valuerange of start_symbol_index_in_slot is 0˜13. In this way, the formula(2) is simplified as the following formula (5):

RA-RNTI=1+start_symbol_index_in_slot+slot_id*14+10*14*f_id.

Based on the process shown in FIG. 2 , in this scenario, the followingsteps are performed.

In S201, the terminal may determine the transmitting resources of therandom access preamble according to Table 2, for example, may transmitthe random access preamble sequence 0 starting from the OFDM symbol 0 inthe slot 1, or transmit the random access preamble sequence 1 startingfrom the OFDM symbol 1 in the slot 4. The transmitted random accesspreamble may be in any format.

In S202, the base station detects the time-frequency resources occupiedby the random access preamble transmitted by the terminal, to obtainslot_id and start_symbol_index_in_slot. The base station may also obtainthe slot_id by detecting the time-frequency resources occupied by therandom access preamble, and then query the above Table 2 according tothe slot_id to obtain the corresponding start_symbol_index_in_slot. Thebase station calculates the RA-RNTI according to the detected slot_idand start_symbol_index_in_slot and based on the above formula (5),scrambles the CRC of the DCI of the terminal by using the RA-RNTI, andtransmits the DCI through a random access response.

In S203, the terminal calculates the RA-RNTI according to the aboveformula (5), and descrambles the CRC of the received DCI by using theRA-RNTI, and decoding to obtain the DCI.

Second Scenario

This scenario describes an example of calculating the RA-RNTI by usingthe second method described above. The configuration table of the numberof random access preambles as shown in Table 3 may be pre-configured atthe base station and the terminal.

TABLE 3 PRACH Preamble System sequence_id_per_slot Configuration Formatframe slot_id t Index (A1) number (1~10) (0~6) 0 A1 Even 1 0 1 A1 Even 41 2 A1 Even 7 2 3 A1 Any 1 3 4 A1 Any 4 4 5 A1 Any 7 5 6 A1 Any 1, 6 6 7A1 Any 2, 7 0 8 A1 Any 3, 8 1 . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .

The above Table 3 defines the slot occupied by the random accesspreamble and the index of the random access preamble sequence in thecorresponding slot for the format Al used by the random access preamblesequence.

The subcarrier spacing is 15 KHz as an example in this scenario, and inthis case, N_slot_per_subframe=1 and N_symbol_per_slot=14. For therandom access preamble sequence format A1, the number of OFDM symbolscontained in each random access preamble sequence is N_OS=2, and thevalue range of sequence_id_per_slot is 0˜6. In this way, the formula (3)is simplified as the following formula (6):

RA-RNTI=1+sequence_id_per_slot*2+slot_id*14+10*14*f_id.

Based on the process shown in FIG. 2 , in this scenario the followingsteps are performed.

In S201, the terminal determines the random access preamble sequence inthe format A1, and the terminal determines the slot occupied by therandom access preamble according to Table 3, for example, the terminalmay transmit the random access preamble sequence 0 in the format A1 inthe slot 1 or the terminal may transmit the random access preamblesequence 1 in the format A1 in the slot 4.

In S202, the base station detects the time-frequency resources occupiedby the random access preamble transmitted by the terminal to obtain theslot_id, and determines that the format of the random access preamblesequence is A1 according to the correspondence between thetime-frequency resources occupied by the random access preamble and therandom access preamble format (this correspondence is pre-configured orpre-agreed), and then looks for the above Table 3 according to theslot_id to obtain the corresponding sequence_id_per_slot. The basestation calculates the RA-RNTI according to the detected slot_id andsequence_id_per_slot and based on the above formula (6), scrambles theCRC of the DCI of the terminal by using the RA-RNTI, and transmits theDCI through a random access response.

In S203, the terminal calculates the RA-RNTI according to the aboveformula (6), and descrambles the CRC of the received DCI by using theRA-RNTI, and decoding to obtain the DCI.

Third Scenario

This scenario describes an example of calculating the RA-RNTI by usingthe third method described above. The configuration table of the numberof random access preambles as shown in Table 4 may be pre-configured atthe base station and the terminal.

TABLE 4 PRACH System Configuration Preamble Format frame slot_idsequence_id_per_slot Index (A0/A1/A2/A3/B1/B2/B3/B4/C0/C2) number (1~10)(0~6) 0 A1 Even 1 0 1 A1 Even 4 1 2 A1 Even 7 2 3 A1 Any 1 3 4 A1 Any 44 5 A1 Any 7 5 6 A1 Any 1, 6 6 7 A1 Any 2, 7 0 8 A1 Any 3, 8 1 . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .

The above Table 4 defines the slot occupied by the random accesspreamble and the index of the random access preamble sequence in thecorresponding slot for the format used by each random access preamblesequence.

The subcarrier spacing is 15 KHz as an example in this scenario, and inthis case, N_slot_per_subframe=1 and N_symbol_per_slot=14. For therandom access preamble sequence format A1, the number of random accesspreamble sequences contained in a slot is N_sequence_per_slot=7, and thevalue range of sequence_id_per_slot is 0˜6. In this way, the formula (4)is simplified as the following formula (7):

RA-RNTI=1+sequence_id_per_slot+slot_id*7+10*14*f_id.

Based on the process shown in FIG. 2 , in this scenario, the steps areas follows.

In S201, the terminal determines the random access preamble sequence inthe format A1, and the terminal determines the slot occupied by therandom access preamble according to Table 4, for example, the terminalmay transmit the random access preamble sequence 0 in the format A1 inthe slot 1 or transmit the random access preamble sequence 1 in theformat A1 in the slot 4.

In S202, the base station detects the time-frequency resources occupiedby the random access preamble transmitted by the terminal to obtain theslot_id, and determines that the format of the random access preamblesequence is A1 according to the correspondence between thetime-frequency resources occupied by the random access preamble and therandom access preamble format (this correspondence is pre-configured orpre-agreed), and then queries the above Table 4 according to the slot_idto obtain the corresponding sequence_id_per_slot. The base stationcalculates the RA-RNTI according to the detected slot_id andsequence_id_per_slot and based on the above formula (7), scrambles theCRC of the DCI of the terminal by using the RA-RNTI, and transmits theDCI through a random access response.

In S203, the terminal calculates the RA-RNTI according to the aboveformula (7), and descrambles the CRC of the received DCI by using theRA-RNTI, and decoding to obtain the DCI.

In the above embodiments of the present application, the RA-RNTI may bedetermined according to the time-frequency resources occupied by therandom access preamble, and the time-frequency resources are thetime-frequency resources in symbol level. Since the RA-RNTI iscalculated based on the time-frequency resources in symbol leveloccupied by the random access preamble, for the NR system, the timeinterval of the random access preamble may be based on the symbol levelin many cases of the preamble format of the short sequence and thesubcarrier spacing, implementing the determination of the RA-RNTI in therandom access process of the NR system.

Through the above embodiments of the present application, it may beensured that the random access mechanism of the 5G NR can operatenormally. Especially for the random access preamble format of the NRshort sequence (L=139 or 127), a slot may contain multiple random accesspreamble sequences, and the number of slots contained in a radio framevaries for different subcarrier spacings, so the solution is proposedfor the problem that it is impossible to calculate the RA-RNTI using theformula in the existing LTE system.

An embodiment of the present application further provides a basestation, which can implement the functions of the base station side inthe above embodiments.

Referring to FIG. 3 , it is a schematic structural diagram of a basestation according to an embodiment of the present application. As shown,the base station may include: a receiving device 301, a determiningdevice 302, and a transmitting device 303, and:

-   -   the receiving device 301 is configured to receive a random        access preamble transmitted by a terminal; the determining        device 302 is configured to determine an RA-RNTI according to        the time-frequency resources occupied by the random access        preamble, and the time-frequency resources are the        time-frequency resources in OFDM symbol level; and the        transmitting device 303 is configured to transmit a random        access response message, and the random access response message        includes the downlink control information allocated by the base        station for the terminal, and the downlink control information        is scrambled by using the RA-RNTI.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the first OFDM symbol occupied by the random access        preamble in its slot, and the index of the slot occupied by the        random access preamble in its radio frame;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   start_symbol_index_in_slot is the index of the first OFDM symbol        occupied by the random access preamble in its slot;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of a frequency domain bandwidth occupied by a        PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the number of OFDM        symbols contained in the random access preamble sequence, and        the index of the slot occupied by the random access preamble in        its radio frame, and the index of the first OFDM symbol occupied        by the random access preamble in its slot corresponds to the        slot occupied by the random access preamble, and the number of        OFDM symbols contained in the random access preamble sequence        corresponds to the format of the random access preamble        sequence;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_OS is the number of OFDM symbols contained in a random access        preamble sequence; and the N_OS is pre-configured or pre-agreed,        and different random access preamble sequences correspond to        different N_OSs;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the total number of        random access preamble sequences in the slot occupied by the        random access preamble, and the index of the slot occupied by        the random access preamble in its radio frame, and the index of        the first OFDM symbol occupied by the random access preamble in        its slot corresponds to the slot occupied by the random access        preamble, and the total number of random access preamble        sequences in the slot occupied by the random access preamble        corresponds to the slot index;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_sequence_per_slot is the total number of random access        preamble sequences in the slot occupied by the random access        preamble; and N_sequence_per_slot corresponds to the slot, and        the total number of random access preamble sequences in a slot        is pre-configured or pre-agreed;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

An embodiment of the present application further provides a terminal,which can implement the functions of the terminal side in the aboveembodiments.

Referring to FIG. 4 , it is a schematic structural diagram of a terminalaccording to an embodiment of the present application. As shown, theterminal may include: a transmitting device 401, a determining device402, and a receiving device 403, and:

-   -   the transmitting device 401 is configured to transmit a random        access preamble sequence to a base station; the determining        device 402 is configured to determine an RA-RNTI according to        the time-frequency resources occupied by the random access        preamble sequence, and the time-frequency resources are the        time-frequency resources in OFDM symbol level; and the receiving        device 403 is configured to receive a random access response        message transmitted by the base station, and descramble the        downlink control information contained in the random access        response message by using the RA-RNTI.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the first OFDM symbol occupied by the random access        preamble in its slot, and the index of the slot occupied by the        random access preamble in its radio frame;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   start_symbol_index_in_slot is the index of the first OFDM symbol        occupied by the random access preamble in its slot;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the number of OFDM        symbols contained in the random access preamble sequence, and        the index of the slot occupied by the random access preamble in        its radio frame, and the index of the first OFDM symbol occupied        by the random access preamble in its slot corresponds to the        slot occupied by the random access preamble, and the number of        OFDM symbols contained in the random access preamble sequence        corresponds to the format of the random access preamble        sequence;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_OS is the number of OFDM symbols contained in a random access        preamble sequence; and the N_OS is pre-configured or pre-agreed,        and different random access preamble sequences correspond to        different N_OSs;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the total number of        random access preamble sequences in the slot occupied by the        random access preamble, and the index of the slot occupied by        the random access preamble in its radio frame, and the index of        the first OFDM symbol occupied by the random access preamble in        its slot corresponds to the slot occupied by the random access        preamble, and the total number of random access preamble        sequences in the slot occupied by the random access preamble        corresponds to the slot index;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_sequence_per_slot is the total number of random access        preamble sequences in the slot occupied by the random access        preamble; and N_sequence_per_slot corresponds to the slot, and        the total number of random access preamble sequences in a slot        is pre-configured or pre-agreed;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

An embodiment of the present application further provides acommunication device, which can implement the functions of the basestation side in the above embodiments.

Referring to FIG. 5 , it is a schematic structural diagram of acommunication device according to an embodiment of the presentapplication. As shown, the communication device may include: a processor501, a memory 502, a transceiver 503, and a bus interface.

The processor 501 is responsible for managing the bus architecture andgeneral processing, and the memory 502 may store the data used by theprocessor 501 when performing the operations. The transceiver 503 isconfigured to receive and transmit the data under the control of theprocessor 501.

The bus architecture may include any numbers of interconnected buses andbridges, and specifically link various circuits of one or moreprocessors represented by the processor 501 and the memory representedby the memory 502. The bus architecture may further link various othercircuits such as peripheral device, voltage regulator and powermanagement circuit, which are all well known in the art and thus willnot be further described again herein. The bus interface provides aninterface. The processor 501 is responsible for managing the busarchitecture and general processing, and the memory 502 may store thedata used by the processor 501 when performing the operations.

The flow disclosed by the embodiment of the present application may beapplied in the processor 501 or implemented by the processor 501. In theimplementation process, each step of the signal processing flow may becompleted by the integrated logic circuit of hardware in the processor501 or the instructions in the form of software. The processor 501 maybe a general-purpose processor, a digital signal processor, anapplication specific integrated circuit, a field programmable gate arrayor other programmable logic device, a discrete gate or transistor logicdevice, or a discrete hardware component, and may implement or performeach method, step and logical block diagram disclosed in the embodimentsof the present application. The general-purpose processor may be amicroprocessor or any conventional processor or the like. The steps ofthe method disclosed in combination with the embodiments of the presentapplication may be directly completed by a hardware processor, orcompleted by a combination of hardware and software modules in theprocessor. The software modules may be located in the random accessmemory, flash memory, read only memory, programmable read only memory orelectrically erasable programmable read only memory, register and othermature storage medium in the art. The storage medium is located in thememory 502, and the processor 501 reads the information in the memory502 and completes the steps of the signal processing flow in combinationwith its hardware.

In one embodiment, the processor 501 is configured to read the programsin the memory 502 and perform the process of: receiving a random accesspreamble transmitted by a terminal via the transceiver; determining anRA-RNTI according to the time-frequency resources occupied by the randomaccess preamble, and the time-frequency resources are the time-frequencyresources in OFDM symbol level; and transmitting a random accessresponse message via the transceiver, and the random access responsemessage includes the downlink control information allocated by the basestation for the terminal, and the downlink control information isscrambled by using the RA-RNTI.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the first OFDM symbol occupied by the random access        preamble in its slot, and the index of the slot occupied by the        random access preamble in its radio frame;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   start_symbol_index_in_slot is the index of the first OFDM symbol        occupied by the random access preamble in its slot;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the number of OFDM        symbols contained in the random access preamble sequence, and        the index of the slot occupied by the random access preamble in        its radio frame, and the index of the first OFDM symbol occupied        by the random access preamble in its slot corresponds to the        slot occupied by the random access preamble, and the number of        OFDM symbols contained in the random access preamble sequence        corresponds to the format of the random access preamble        sequence;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_OS is the number of OFDM symbols contained in a random access        preamble sequence; and the N_OS is pre-configured or pre-agreed,        and different random access preamble sequences correspond to        different N_OSs;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the total number of        random access preamble sequences in the slot occupied by the        random access preamble, and the index of the slot occupied by        the random access preamble in its radio frame, and the index of        the first OFDM symbol occupied by the random access preamble in        its slot corresponds to the slot occupied by the random access        preamble, and the total number of random access preamble        sequences in the slot occupied by the random access preamble        corresponds to the slot index;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_sequence_per_slot is the total number of random access        preamble sequences in the slot occupied by the random access        preamble; and N_sequence_per_slot corresponds to the slot, and        the total number of random access preamble sequences in a slot        is pre-configured or pre-agreed;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

An embodiment of the present application further provides acommunication device, which can implement the functions of the terminalside in the above embodiments.

Referring to FIG. 6 , it is a schematic structural diagram of acommunication device according to an embodiment of the presentapplication. As shown, the communication device may include: a processor601, a memory 602, a transceiver 603, and a bus interface.

The processor 601 is responsible for managing the bus architecture andgeneral processing, and the memory 602 may store the data used by theprocessor 601 when performing the operations. The transceiver 603 isconfigured to receive and transmit the data under the control of theprocessor 601.

The bus architecture may include any numbers of interconnected buses andbridges, and specifically link various circuits of one or moreprocessors represented by the processor 601 and the memory representedby the memory 602. The bus architecture may further link various othercircuits such as peripheral device, voltage regulator and powermanagement circuit, which are all well known in the art and thus willnot be further described again herein. The bus interface provides aninterface. The processor 601 is responsible for managing the busarchitecture and general processing, and the memory 602 may store thedata used by the processor 601 when performing the operations.

The flow disclosed by the embodiment of the present application may beapplied in the processor 601 or implemented by the processor 601. In theimplementation process, each step of the signal processing flow may becompleted by the integrated logic circuit of hardware in the processor601 or the instructions in the form of software. The processor 601 maybe a general-purpose processor, a digital signal processor, anapplication specific integrated circuit, a field programmable gate arrayor other programmable logic device, a discrete gate or transistor logicdevice, or a discrete hardware component, and may implement or performeach method, step and logical block diagram disclosed in the embodimentsof the present application. The general-purpose processor may be amicroprocessor or any conventional processor or the like. The steps ofthe method disclosed in combination with the embodiments of the presentapplication may be directly completed by a hardware processor, orcompleted by a combination of hardware and software modules in theprocessor. The software modules may be located in the random accessmemory, flash memory, read only memory, programmable read only memory orelectrically erasable programmable read only memory, register and othermature storage medium in the art. The storage medium is located in thememory 602, and the processor 601 reads the information in the memory602 and completes the steps of the signal processing flow in combinationwith its hardware.

In one embodiment, the processor 601 is configured to read the programsin the memory 602 and perform the process of: transmitting a randomaccess preamble sequence to a base station via the transceiver;determining an RA-RNTI according to the time-frequency resourcesoccupied by the random access preamble sequence, and the time-frequencyresources are the time-frequency resources in OFDM symbol level; andreceiving a random access response message transmitted by the basestation via the transceiver, and descrambling the downlink controlinformation contained in the random access response message by using theRA-RNTI.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the first OFDM symbol occupied by the random access        preamble in its slot, and the index of the slot occupied by the        random access preamble in its radio frame;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   start_symbol_index_in_slot is the index of the first OFDM symbol        occupied by the random access preamble in its slot;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the number of OFDM        symbols contained in the random access preamble sequence, and        the index of the slot occupied by the random access preamble in        its radio frame, and the index of the first OFDM symbol occupied        by the random access preamble in its slot corresponds to the        slot occupied by the random access preamble, and the number of        OFDM symbols contained in the random access preamble sequence        corresponds to the format of the random access preamble        sequence;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_OS is the number of OFDM symbols contained in a random access        preamble sequence; and the N_OS is pre-configured or pre-agreed,        and different random access preamble sequences correspond to        different N_OSs;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

In one embodiment, the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the preamble;

-   -   and the time domain resource related parameters include: the        index of the random access preamble sequence in the slot        occupied by the random access preamble, the total number of        random access preamble sequences in the slot occupied by the        random access preamble, and the index of the slot occupied by        the random access preamble in its radio frame, and the index of        the first OFDM symbol occupied by the random access preamble in        its slot corresponds to the slot occupied by the random access        preamble, and the total number of random access preamble        sequences in the slot occupied by the random access preamble        corresponds to the slot index;    -   the frequency domain resource related parameters include: the        index of the frequency domain bandwidth occupied by a PRACH        corrected based on a coefficient; the coefficient is determined        according to the number of slots in a subframe and the number of        OFDM symbols in a slot, and the PRACH is used to transmit the        random access preamble.

In one embodiment, the calculation formula of the RA-RNTI is:

RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id

-   -   and:    -   sequence_id_per_slot is the index of the random access preamble        sequence in the slot occupied by the random access preamble; and        the correspondence between the slots and the indexes of the        random access preambles is pre-configured or pre-agreed;    -   N_sequence_per_slot is the total number of random access        preamble sequences in the slot occupied by the random access        preamble; and N_sequence_per_slot corresponds to the slot, and        the total number of random access preamble sequences in a slot        is pre-configured or pre-agreed;    -   slot_id is the index of the slot occupied by the random access        preamble in its radio frame;    -   N_symbol_per_slot represents the number of OFDM symbols in a        slot;    -   N_slot_per_subframe represents the number of slots in a        subframe;    -   f_id is the index of the frequency domain bandwidth occupied by        a PRACH.

An embodiment of the present application further provides a computerstorage medium. The computer readable storage medium stores the computerexecutable instructions configured to cause the computer to perform theprocess performed by the base station side in the above embodiments.

An embodiment of the present application further provides a computerstorage medium. The computer readable storage medium stores the computerexecutable instructions configured to cause the computer to perform theprocess performed by the terminal side in the above embodiments.

The present application is described by reference to the flow chartsand/or the block diagrams of the methods, the devices (systems) and thecomputer program products according to the embodiments of the presentapplication. It should be understood that each process and/or block inthe flow charts and/or the block diagrams, and a combination ofprocesses and/or blocks in the flow charts and/or the block diagrams maybe implemented by the computer program instructions. These computerprogram instructions may be provided to a general-purpose computer, adedicated computer, an embedded processor, or a processor of anotherprogrammable data processing device to produce a machine, and anapparatus for implementing the functions specified in one or moreprocesses of the flow charts and/or one or more blocks of the blockdiagrams is produced by the instructions executed by the computer or theprocessor of another programmable data processing device.

These computer program instructions can also be stored in a computerreadable memory which may guide the computer or another programmabledata processing device to operate in a particular way, and theinstructions stored in the computer readable memory produce amanufacture including the instruction apparatus which implements thefunctions specified in one or more processes of the flow charts and/orone or more blocks of the block diagrams.

These computer program instructions may also be loaded onto the computeror another programmable data processing device, and a series ofoperation steps are performed on the computer or another programmabledevice to produce the computer-implemented processing. Thus theinstructions executed on the computer or another programmable deviceprovide steps for implementing the functions specified in one or moreprocesses of the flow charts and/or one or more blocks of the blockdiagrams.

Although the embodiments of the present application have been described,additional alterations and modifications to these embodiments. Thus theattached claims are intended to be interpreted to include theembodiments as well as all the alterations and modifications fallingwithin the scope of the present application.

Various modifications and variations to the present application may bemade without departing from the embodiments of the present application.Thus, the present application is also intended to encompass thesemodifications and variations therein as long as these modifications andvariations to the present application come into the scope of the claimsof the present application and their equivalents.

What is claimed is:
 1. A method for determining an RA-RNTI, comprising:determining, by a terminal, a Random Access-Radio Network TemporaryIdentifier (RA-RNTI), according to time-frequency resources occupied bya random access preamble, wherein the time-frequency resources aretime-frequency resources in Orthogonal Frequency Division Multiplexing(OFDM) symbol level; receiving, by the terminal, a random accessresponse message transmitted by a base station, and descramblingdownlink control information contained in the random access responsemessage by using the RA-RNTI; wherein a calculation formula of theRA-RNTI comprises:RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id  formula 1: wherein: start_symbol_index_in_slot is an index of firstOFDM symbol occupied by the random access preamble in its slot; slot_idis an index of first slot occupied by the random access preamble in itsradio frame; N_symbol_per_slot represents a number of OFDM symbols in aslot; N_slot_per_subframe represents a number of slots in a subframe;f_id is an index of a frequency domain bandwidth occupied by a PhysicalRandom Access CHannel (PRACH); and/or,RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id  formula 2: wherein: sequence_id_per_slot is the index of the randomaccess preamble in the slot occupied by the random access preamble;wherein the correspondence between the slots and the indexes of therandom access preambles is pre-configured or pre-agreed; N_OS is thenumber of OFDM symbols contained in a random access preamble; whereinthe N_OS is pre-configured or pre-agreed, and different random accesspreambles correspond to different N_OSs; slot_id is the index of firstslot occupied by the random access preamble in its radio frame;N_symbol_per_slot represents the number of OFDM symbols in a slot;N_slot_per_subframe represents the number of slots in a subframe; f_idis the index of the frequency domain bandwidth occupied by a PRACH. 2.The method according to claim 1, further comprising: transmitting, bythe terminal, uplink data according to scheduling information and TimeAdjustment (TA) information carried transmitted by the base station inthe random access response.
 3. The method according to claim 2, whereinthe uplink data comprises a unique ID of the terminal and a RadioResource Control (RRC) connection request.
 4. The method according toclaim 1, wherein the RA-RNTI is determined according to time domainresource related parameters and frequency domain resource relatedparameters of the time-frequency resources occupied by the random accesspreamble; wherein the time domain resource related parameters comprise:an index of first OFDM symbol occupied by the random access preamble inits slot, and an index of a slot occupied by the random access preamblein its radio frame; the frequency domain resource related parameterscomprise: an index of a frequency domain bandwidth occupied by a PRACHcorrected based on a coefficient; the coefficient is determinedaccording to a number of slots in a subframe and a number of OFDMsymbols in a slot, and the PRACH is used to transmit the random accesspreamble.
 5. The method according to claim 1, wherein the RA-RNTI isdetermined according to time domain resource related parameters andfrequency domain resource related parameters of the time-frequencyresources occupied by the preamble; wherein the time domain resourcerelated parameters comprise: the index of the random access preamble inthe slot occupied by the random access preamble, the number of OFDMsymbols contained in the random access preamble, and the index of theslot occupied by the random access preamble in its radio frame, whereinthe index of the first OFDM symbol occupied by the random accesspreamble in its slot corresponds to the slot occupied by the randomaccess preamble, and the number of OFDM symbols contained in the randomaccess preamble corresponds to the format of the random access preamble;the frequency domain resource related parameters comprise: the index ofthe frequency domain bandwidth occupied by a PRACH corrected based on acoefficient; the coefficient is determined according to the number ofslots in a subframe and the number of OFDM symbols in a slot, and thePRACH is used to transmit the random access preamble.
 6. The methodaccording to claim 1, wherein the RA-RNTI is determined according totime domain resource related parameters and frequency domain resourcerelated parameters of the time-frequency resources occupied by thepreamble; wherein the time domain resource related parameters comprise:the index of the random access preamble in the slot occupied by therandom access preamble, the total number of random access preambles inthe slot occupied by the random access preamble, and the index of theslot occupied by the random access preamble in its radio frame, whereinthe index of the first OFDM symbol occupied by the random accesspreamble in its slot corresponds to the slot occupied by the randomaccess preamble, and the total number of random access preambles in theslot occupied by the random access preamble corresponds to the slotindex; the frequency domain resource related parameters comprise: theindex of the frequency domain bandwidth occupied by a PRACH correctedbased on a coefficient; the coefficient is determined according to thenumber of slots in a subframe and the number of OFDM symbols in a slot,and the PRACH is used to transmit the random access preamble.
 7. Themethod according to claim 1, wherein the calculation formula of theRA-RNTI further comprises:RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id wherein: sequence_id_per_slotis the index of the random access preamble in the slot occupied by therandom access preamble; wherein the correspondence between the slots andthe indexes of the random access preambles is pre-configured orpre-agreed; N_sequence_per_slot is the total number of random accesspreambles in the slot occupied by the random access preamble; whereinN_sequence_per_slot corresponds to the slot, and the total number ofrandom access preambles in a slot is pre-configured or pre-agreed;slot_id is the index of first slot occupied by the random accesspreamble in its radio frame; N_symbol_per_slot represents the number ofOFDM symbols in a slot; N_slot_per_subframe represents the number ofslots in a subframe; f_id is the index of the frequency domain bandwidthoccupied by a PRACH.
 8. A method for determining an RA-RNTI, comprising:determining, by a base station, a Random Access-Radio Network TemporaryIdentifier (RA-RNTI) according to time-frequency resources occupied by arandom access preamble transmitted by a terminal, wherein thetime-frequency resources are time-frequency resources in OrthogonalFrequency Division Multiplexing (OFDM) symbol level; transmitting, bythe base station, a random access response message, wherein the randomaccess response message comprises downlink control information allocatedby the base station for the terminal, and the downlink controlinformation is scrambled by using the RA-RNTI; wherein a calculationformula of the RA-RNTI comprises:RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id  formula 1: wherein: start_symbol_index_in_slot is an index of firstOFDM symbol occupied by the random access preamble in its slot; slot_idis an index of first slot occupied by the random access preamble in itsradio frame; N_symbol_per_slot represents a number of OFDM symbols in aslot; N_slot_per_subframe represents a number of slots in a subframe;f_id is an index of a frequency domain bandwidth occupied by a PhysicalRandom Access CHannel (PRACH); and/or,RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id  formula 2: wherein: sequence_id_per_slot is the index of the randomaccess preamble in the slot occupied by the random access preamble;wherein the correspondence between the slots and the indexes of therandom access preambles is pre-configured or pre-agreed; N_OS is thenumber of OFDM symbols contained in a random access preamble; whereinthe N_OS is pre-configured or pre-agreed, and different random accesspreambles correspond to different N_OSs; slot_id is the index of firstslot occupied by the random access preamble in its radio frame;N_symbol_per_slot represents the number of OFDM symbols in a slot;N_slot_per_subframe represents the number of slots in a subframe; f_idis the index of the frequency domain bandwidth occupied by a PRACH. 9.The method according to claim 8, wherein the downlink controlinformation comprises: an index of a random access preamble received bythe base station, a Time Adjustment (TA) of an uplink transmission,scheduling information of Physical Uplink Shared Channel (PUSCH), andthe allocated Cell Radio Network Temporary Identifier (C-RNTI).
 10. Themethod according to claim 8, wherein the RA-RNTI is determined accordingto time domain resource related parameters and frequency domain resourcerelated parameters of the time-frequency resources occupied by therandom access preamble; wherein the time domain resource relatedparameters comprise: an index of first OFDM symbol occupied by therandom access preamble in its slot, and an index of a slot occupied bythe random access preamble in its radio frame; the frequency domainresource related parameters comprise: an index of a frequency domainbandwidth occupied by a PRACH, corrected based on a coefficient; thecoefficient is determined according to a number of slots in a subframeand a number of OFDM symbols in a slot, and the PRACH is used totransmit the random access preamble.
 11. The method according to claim8, wherein the RA-RNTI is determined according to time domain resourcerelated parameters and frequency domain resource related parameters ofthe time-frequency resources occupied by the preamble; wherein the timedomain resource related parameters comprise: the index of the randomaccess preamble in the slot occupied by the random access preamble, thenumber of OFDM symbols contained in the random access preamble, and theindex of the slot occupied by the random access preamble in its radioframe, wherein the index of the first OFDM symbol occupied by the randomaccess preamble in its slot corresponds to the slot occupied by therandom access preamble, and the number of OFDM symbols contained in therandom access preamble corresponds to the format of the random accesspreamble; the frequency domain resource related parameters comprise: theindex of the frequency domain bandwidth occupied by a PRACH correctedbased on a coefficient; the coefficient is determined according to thenumber of slots in a subframe and the number of OFDM symbols in a slot,and the PRACH is used to transmit the random access preamble.
 12. Acommunication device, comprising: a processor and a memory, wherein theprocessor is configured, when executing a computer program stored in thememory, to implement the process of: determining a Random Access-RadioNetwork Temporary Identifier (RA-RNTI) according to time-frequencyresources occupied by a random access preamble, wherein thetime-frequency resources are time-frequency resources in OrthogonalFrequency Division Multiplexing (OFDM), symbol level; receiving a randomaccess response message transmitted by a base station, and descramblingdownlink control information contained in the random access responsemessage by using the RA-RNTI; wherein a calculation formula of theRA-RNTI comprises:RA-RNTI=1+start_symbol_index_in_slot+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id  formula 1: wherein: start_symbol_index_in_slot is an index of firstOFDM symbol occupied by the random access preamble in its slot; slot_idis an index of first slot occupied by the random access preamble in itsradio frame; N_symbol_per_slot represents a number of OFDM symbols in aslot; N_slot_per_subframe represents a number of slots in a subframe;f_id is an index of a frequency domain bandwidth occupied by a PhysicalRandom Access Channel (PRACH); and/or,RA-RNTI=1+sequence_id_per_slot*N_OS+slot_id*N_symbol_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id  formula 2: wherein: sequence_id_per_slot is the index of the randomaccess preamble in the slot occupied by the random access preamble;wherein the correspondence between the slots and the indexes of therandom access preambles is pre-configured or pre-agreed; N_OS is thenumber of OFDM symbols contained in a random access preamble; whereinthe N_OS is pre-configured or pre-agreed, and different random accesspreambles correspond to different N_Oss; slot_id is the index of firstslot occupied by the random access preamble in its radio frame;N_symbol_per_slot represents the number of OFDM symbols in a slot;N_slot_per_subframe represents the number of slots in a subframe; f_idis the index of the frequency domain bandwidth occupied by a PRACH. 13.The communication device according to claim 12, the processor is furtherconfigured, when executing a computer program stored in the memory, toimplement the process of: Transmitting, by a terminal, uplink dataaccording to scheduling information and Time Adjustment (TA) informationcarried transmitted by the base station in the random access response.14. The communication device according to claim 12, wherein the RA-RNTIis determined according to time domain resource related parameters andfrequency domain resource related parameters of the time-frequencyresources occupied by the random access preamble; wherein the timedomain resource related parameters comprise: an index of first OFDMsymbol occupied by the random access preamble in its slot, and an indexof a slot occupied by the random access preamble in its radio frame; thefrequency domain resource related parameters comprise: an index of afrequency domain bandwidth occupied by a PRACH, corrected based on acoefficient; the coefficient is determined according to a number ofslots in a subframe and a number of OFDM symbols in a slot, and thePRACH is used to transmit the random access preamble.
 15. Thecommunication device according to claim 12, wherein the RA-RNTI isdetermined according to time domain resource related parameters andfrequency domain resource related parameters of the time-frequencyresources occupied by the preamble; wherein the time domain resourcerelated parameters comprise: the index of the random access preamble inthe slot occupied by the random access preamble, the total number ofrandom access preambles in the slot occupied by the random accesspreamble, and the index of the slot occupied by the random accesspreamble in its radio frame, wherein the index of the first OFDM symboloccupied by the random access preamble in its slot corresponds to theslot occupied by the random access preamble, and the total number ofrandom access preambles in the slot occupied by the random accesspreamble corresponds to the slot index; the frequency domain resourcerelated parameters comprise: the index of the frequency domain bandwidthoccupied by a PRACH corrected based on a coefficient; the coefficient isdetermined according to the number of slots in a subframe and the numberof OFDM symbols in a slot, and the PRACH is used to transmit the randomaccess preamble.
 16. The communication device according to claim 12,wherein the calculation formula of the RA-RNTI further comprises:RA-RNTI=1+sequence_id_per_slot+slot_id*N_sequence_per_slot+10*N_slot_per_subframe*N_symbol_per_slot*f_id wherein: sequence_id_per_slotis the index of the random access preamble in the slot occupied by therandom access preamble; wherein the correspondence between the slots andthe indexes of the random access preambles is pre-configured orpre-agreed; N_sequence_per_slot is the total number of random accesspreambles in the slot occupied by the random access preamble; whereinN_sequence_per_slot corresponds to the slot, and the total number ofrandom access preambles in a slot is pre-configured or pre-agreed;slot_id is the index of first slot occupied by the random accesspreamble in its radio frame; N_symbol_per_slot represents the number ofOFDM symbols in a slot; N_slot_per_subframe represents the number ofslots in a subframe; f_id is the index of the frequency domain bandwidthoccupied by a PRACH.
 17. A communication device, comprising: aprocessor, a memory, a transceiver and a bus interface; the processor isconfigured to read programs in the memory and perform the method ofclaim
 8. 18. The communication device according to claim 17, wherein thedownlink control information comprises: an index of a random accesspreamble received by the base station, a Time Adjustment (TA) of theuplink transmission, scheduling information of Physical Uplink SharedCHannel (PUSCH), and the allocated Cell Radio Network TemporaryIdentifier (C-RNTI).
 19. A computer storage medium storing computerexecutable instructions configured to cause a computer to perform themethod of claim
 1. 20. A computer storage medium storing computerexecutable instructions configured to cause the computer to perform themethod of claim 8.